FRE-588: Complete tRPC/Clerk integration with database schema updates

- Updated router.ts middleware for Clerk authentication
- Modified test contexts to use clerkUserId
- Added team tables to test schema
- Updated WaitlistForm and waitlist page
- Created src/server/trpc/ parallel structure

All 258 tests pass. Ready for Security Reviewer.

server/trpc/test-setup.ts

@@ -111,18 +111,34 @@ CREATE TABLE IF NOT EXISTS revisions (
        updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
      );
 
-     CREATE TABLE IF NOT EXISTS revision_changes (
-       id INTEGER PRIMARY KEY AUTOINCREMENT,
-       revision_id INTEGER NOT NULL REFERENCES revisions(id),
-       change_type TEXT NOT NULL CHECK(change_type IN ('addition', 'deletion', 'modification')),
-       element_type TEXT,
-       old_content TEXT,
-       new_content TEXT,
-       scene_number INTEGER,
-       line_number INTEGER,
-       page_number INTEGER,
-       created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
-     );
+CREATE TABLE IF NOT EXISTS revision_changes (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        revision_id INTEGER NOT NULL REFERENCES revisions(id),
+        change_type TEXT NOT NULL CHECK(change_type IN ('addition', 'deletion', 'modification')),
+        element_type TEXT,
+        old_content TEXT,
+        new_content TEXT,
+        scene_number INTEGER,
+        line_number INTEGER,
+        page_number INTEGER,
+        created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+      );
+
+    CREATE TABLE IF NOT EXISTS teams (
+      id TEXT PRIMARY KEY,
+      name TEXT NOT NULL,
+      owner_id INTEGER NOT NULL REFERENCES users(id),
+      created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+      updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+    );
+
+    CREATE TABLE IF NOT EXISTS team_members (
+      id INTEGER PRIMARY KEY AUTOINCREMENT,
+      team_id TEXT NOT NULL REFERENCES teams(id),
+      user_id INTEGER NOT NULL REFERENCES users(id),
+      role TEXT NOT NULL DEFAULT 'editor',
+      joined_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
+    );
   `;
 
 export let globalSqlite: Database.Database | null = null;